fix preprocessor tests for Julia 1.0

src/Dynare.jl

src/DynareModel.jl

src/DynareOptions.jl

src/DynareOutput.jl

src/DynareSolvers.jl

src/SteadyState.jl

src/TestFunctions.jl

src/linalg/QUT.jl

src/linalg/QrAlgo.jl

src/linalg/SchurAlgo.jl

src/linalg/exceptions.jl

src/solvers/CyclicReduction.jl

src/solvers/GeneralizedSchurDecompositionSolver.jl

src/solvers/SolveEyePlusMinusAkronB.jl

src/solvers/exceptions.jl

test/checkpath.jl

test/dynare-solvers/test-1.jl

test/dynare-solvers/test-2.jl

test/preprocessor/test-1.jl

test/preprocessor/test-2.jl